Automatic registration attemps doesn't work

[123456]

Every 12-16 hours my Voip line unregister and then the automatic registration attempt doesn't work.
When i manually click "register the line", the line register without error.

This is the log.

3CX Phone System v3.0.1928.0
07:28:57.312	ClientRegs::onFailure	Registration of sip:[email protected] has failed; reason=Server Internal Error

I have set the option "Time between registration attemps (in seconds)" to 30 sec, but nothing change, the auto reconnection doesn't work.
Any suggestion?

 

[gbarnes]

Registration failed after 12 hrs...

Could you have a dynamic IP address? I am thinking maybe this is getting renewed and not updating properly. Do you have the following option selected in registration field :-


Which IP to use in 'Contact' field for registration: = External (Stun resolved)

And the stun server settings set up under General/Stun server options.